<template>
  <div class="">
    <h1 v-text="msg" ref="title"></h1>
    <button @click="showDOM" ref="btn">点我输出上方的DOM元素</button>
    <School ref="sch"/>
  </div>
</template>

<script>
import School from './components/School'
export default {
  name:'App',
  components:{
    School,
  },
  data(){
    return{
      msg:'欢迎学习vue',
    }
  },
  methods:{
    showDOM(){
      console.log(this.$refs.title)//真实DOM元素
      console.log(this.$refs.btn)//真实DOM元素
      console.log(this.$refs.sch)//school组件的实例对象（vc）
    }
  }
}
</script>
